package com.rchat.pocmini.common.utils;

import android.app.Activity;
import android.content.Context;


import com.itsdf07.alog.ALog;

import java.util.Stack;

/**
 * Activity栈管理
 * Created by itsdf07 on 2017/7/7 15:10.
 * E-Mail: 923255742@qq.com
 * GitHub: https://github.com/itsdf07
 */

public class ActivityStackManager {

    private static Stack<Activity> activityStack;
    private static ActivityStackManager instance;

    private ActivityStackManager() {
    }

    public static ActivityStackManager getStackManagerUtils() {
        if (instance == null) {
            instance = new ActivityStackManager();
        }
        return instance;
    }

    /**
     * 添加Activity到堆栈
     */
    public void addActivity(Activity activity) {
        ALog.d("add activity = %s",activity.getClass().getSimpleName());
        if (activityStack == null) {
            activityStack = new Stack<Activity>();
        }
        activityStack.add(activity);
    }

    /**
     * 获取当前Activity（堆栈中最后一个压入的）
     */
    public Activity getCurrentActivity() {
        Activity activity = activityStack.lastElement();
        return activity;
    }

    public int getCurrentStackActivityCount(){
        return activityStack.size();
    }

    /**
     * 获取指定的Activity
     */
    public static Activity getActivity(Class<?> cls) {
        if (activityStack != null)
            for (Activity activity : activityStack) {
                if (activity.getClass().equals(cls)) {
                    return activity;
                }
            }
        return null;
    }

    /**
     * 结束当前Activity（堆栈中最后一个压入的）
     */
    public void finishActivity() {
        Activity activity = activityStack.lastElement();
        finishActivity(activity);
    }

    /**
     * 结束指定的Activity
     */
    public void finishActivity(Activity activity) {
        ALog.d("finish activity = %s",activity.getClass().getSimpleName());
        if (activity != null ) {//&& !activity.isFinishing()
            activityStack.remove(activity);
            activity.finish();
        }
    }

    /**
     * 结束指定类名的Activity
     */
    public void finishActivity(Class<?> cls) {
        for (Activity activity : activityStack) {
            if (activity.getClass().equals(cls)) {
                finishActivity(activity);
                break;
            }
        }
    }

    /**
     * 结束所有Activity
     */
    public void finishAllActivity() {
        for (int i = 0, size = activityStack.size(); i < size; i++) {
            if (null != activityStack.get(i)) {
                finishActivity(activityStack.get(i));
//                break;
            }
        }
        activityStack.clear();
    }

    /**
     * 返回到指定的activity
     */
    public void return2Activity(Class<?> cls) {
        while (activityStack.size() != 0) {
            if (activityStack.peek().getClass() == cls) {
                break;
            } else {
                finishActivity(activityStack.peek());
            }
        }
    }

    /**
     * 是否已经打开指定的activity
     */
    public boolean isOpenActivity(Class<?> cls) {
        if (activityStack != null) {
            for (int i = 0, size = activityStack.size(); i < size; i++) {
                if (cls == activityStack.peek().getClass()) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * 退出应用程序
     */
    public void AppExit(Context context) {
        try {
            finishAllActivity();
            // 杀死该应用进程
            android.os.Process.killProcess(android.os.Process.myPid());
            System.exit(0);
        } catch (Exception e) {
        }
    }

}
